SOLUTION: Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7
mph, Ben at 5 mph. If they start at the same time, how long (in minutes)
will it be before they are 1/3 mile
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-> SOLUTION: Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7
mph, Ben at 5 mph. If they start at the same time, how long (in minutes)
will it be before they are 1/3 mile
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Question 249621: Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7
mph, Ben at 5 mph. If they start at the same time, how long (in minutes)
will it be before they are 1/3 miles apart? Found 2 solutions by Alan3354, checkley77:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7
mph, Ben at 5 mph. If they start at the same time, how long (in minutes)
will it be before they are 1/3 miles apart?
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They separate at 2 mph (7-5).
(1/3) mile/2 mph = 1/6 hour
= 10 minutes
You can put this solution on YOUR website! D=RT
D+1/3=7T OR D=7T-1/3 FOR NOAH
D=5T FOR BEN.
SET THE D EQUATION EQUAL 7 SOLVE FOR T.
7T-1/3=5T
7T-5T=1/3
2T=1/3
T=(1/3)/2
T=1/3*1/2=1/6 HOURS OR 10 MIN.
PROOF:
7/6-1/3=5/6
7/6-2/6=5/6
5/6=5/6
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